i tried my first custom tune and it ran sweet for like 3 days then started throwing all sorts of turbo and injector codes... so reset to stock and for week no codes and left it stock for the tow trip just in case only had the egr code from the delete. mostly curious about what to calculate to get correct mpg and if anyone saw good bad temps etc...

also my trans temp was 167-178 the whole time never got above 178 and only hit it on a friggin huge hill that i hit 224 EOT on. '

anyone think the tow+5-hp canned sct tune would of been fine for 5k rounded up weight trailer?

I'm sure it would have been okay for the motor... Trans tuning with canned tunes, but I wouldn't trust it. To calculate mpg fill up and reset trip odometer, afterthought trip fill up again (preferably at same gas station and same pump) and make sure you fill up the same. If you fill up the first time and just let it click off and stop, or top it off once more, or completely fill it up to the top of the fuel filler neck. Then divide the number of miles into the gallons used.

Example 400 miles (read off trip odometer after trip) divided by 20 gallons (what it took to fill up the second time) and you get an honest 20 mpg...

im good on basic mpg... but with my 35's my speedo is off so my odometer is off too. i know with larger tires im going little further miles wise before i fill up but curious if anyone knew the formula to find the corrected mpg... exp:

with my stock tire size i go 280 miles and devide gallons its accurate because my computer is programmer with the stock tire size but if i got 280 miles with 35's i actually went little further because the 35in tire does less revolutions per mile then the i believe 32in stock tire etc...

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